My RegExp pattern alllowing double "@" in email

Question

Hello who just have come.

I'm learning JavaScript RegExp rules. And i have wrote email validation pattern. But unfortunatley it allowing double "@" in examples.

Please help me to improve it.

^(?:\s|(?:[a-z]))(?:[a-zA-Z0-9]+.)+@(?:[a-zA-Z])+.[a-z]+\s+

Also screenshot available:

Answer 1

The reason that your regex allows second @ is . character:

^(?:\s|(?:[a-z]))(?:[a-zA-Z0-9]+.)+@(?:[a-zA-Z])+.[a-z]+\s+

                                                 ^

It allows any character. Just escape it with \. to make it dot-only.